Ive had this gun for a few years now. bought it from someone who built this as a project gun. The changes I made to it were putting on the red dot, PTS stock ( it is a bit stiff trying to move), grip, rig rail, and silencer. An ASCU V3 has been put in and it wired to deans (cannot include a battery as I only have one). This thing is a great piece of kit with a quick rate of fire and good range (I can provide a video on request). I took this to a game on August 1st and it came it around 290 fps of .28 and it has been set to 340 on .20. Can be posted via courier

The specs are

G&P gearbox case 

Ultimate bearings

Ultimate Piston Head

Ultimate Cylinder Head

Ultimate Nozzel

Ultimate High speed gears 

Ultimate anti reversal 

Madbull velocity enhanced hop rubber, shark fin nub, 603 tightbore

ASCU V3